I normal put it in 1/2 gal jugs with the plastic caps as when I serve it.... it goes too fast for 750 wine bottles and corks. I started collecting beer bottles to use when I get enough to make it more friendly to take it somewhere when it's just for me.
yes I added six but U might try 5 and taste once or twice.
see what U like.
it stays pretty tart for me even after the sugar. I rack it to a 6 gal carboy so I can hit it with the drill mix-stir. then rack to smaller jugs after I get it stirred well.
warning -- I have taken this to reunions etc and I never bring enough